id:A117290 - OEIS Search Results

Search: id:A117290

Displaying 1-1 of 1 results found.

page 1

Numbers n for which the cototient n-phi(n) is a Fibonacci number.

+0
1

2, 3, 4, 5, 7, 9, 11, 12, 13, 14, 16, 17, 19, 23, 25, 29, 31, 33, 37, 41, 43, 45, 47, 53, 57, 59, 61, 67, 71, 73, 79, 83, 85, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 159, 163, 167, 169, 173, 175, 179, 181, 191, 193, 197, 199, 211, 216, 223 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`33 is in the sequence because 33-phi(33)=13, which is a Fibonacci number.`
	CROSSREFS	`Cf. A000045.` `Sequence in context: A036408 A055600 A139528 this_sequence A045782 A064005 A026285` `Adjacent sequences: A117287 A117288 A117289 this_sequence A117291 A117292 A117293`
	KEYWORD	`nonn`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 23 2006`

page 1

Search completed in 0.002 seconds

Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research